where \(\sigma \)  refers to the sigmoid function, \(\delta \)  refers to the ReLU [1]} function,
\( \mathbf {W}_{1}\in \mathbb {R}^{\frac{C}{r}\times C}\) 
and
\( \mathbf {W}_{2}\in \mathbb {R}^{C\times \frac{C}{r}}\) . \( \frac{C}{r}\)  is the bottleneck dim. Usually, we set \(C_{encoder}=12, C_{decoder}=6, r=1\) .
\(\widetilde{\mathbf {y}}_{c} = \mathbf {F}_{scale}(\mathbf {y}_{c},s_{c}) = s_{c}\mathbf {y}_{c}\) 
